In a post on Facebook Sunday, the Good Morning America host reflected back on a "critical milestone" in her treatment for myelodysplastic syndrome, saying she was grateful for her "longtime girlfriend" Amber Laign, among others.

An ABC spokesperson confirmed to E! News that Roberts has been in a 10 year same-sex relationship with Laign, who is a licensed massage therapist who specializes in working with people recovering from injuries.

"Flashback 12/29/12....Hard to believe this was 1 year ago today..when I reached a critical milestone of 100 days post transplant...and KJ was finally allowed to come back home," Roberts wrote.

"Reading this comforts me and I hope the same for you: "If you are depressed, you are living in the past. If you are anxious, you are living in the future. If you are at peace, you are living in the present."

"At this moment I am at peace and filled with joy and gratitude. I am grateful to God, my doctors and nurses for my restored good health. I am grateful for my sister, Sally-Ann, for being my donor and giving me the gift of life. I am grateful for my entire family, my long time girlfriend, Amber, and friends as we prepare to celebrate a glorious new year together."

The news anchor, who battled breast cancer before being diagnosed with myelodysplastic syndrome, went on to take everyone for their prayer and well wishes for her recovery, and asked fans to reflect on what they're grateful for too.

Robin is currently on vacation, and it isn't known yet whether she'll discuss her relationship with her girlfriend on Good Morning America when she returns.

After posting her note on Facebook, Russell Simmons, Chely Wright, more stars and industry peeps congratulated her on coming out, with the hip hop mogul tweeting, "sending good thoughts to Robin Roberts. #LoveIsLove."

Wilson Cruz also chimed in, issuing this statement: "Robin's courage continues to be unwavering, and today she has inspired countless young LGBT people and, in particular, LGBT people of color -- especially LGBT women of color -- who can now see a reflection of themselves on America's most-watched morning show. As one of the nation's most-trusted journalists, as well as a top athlete, Robin is also helping millions of viewers to better understand the rich diversity of the LGBT community."

Jeffrey Schneider, Senior Vice President of ABC News also told E! News, "Love Robin and Amber, and have known Amber for a long time. We were all touched by Robin's FB message today, so glad she has so much incredible support in her life."